I'm really new to JP1 and I am trying to modify the remote section of my PAL(UK) Slingmedia box to control the timer function of my Philips DVDR70 DVD recorder.
I have downloaded and installed RMv1.66, the RMD file v1.25, and Sun Java RTE v5.0 and have the Philips DVDR70 1125_2330.rmdu file in the Upgrades folder.

When I start the RemoteMaster.jar, I get the following errors, but the program does seem to start OK.

java.io.FileNotFoundException: F:\sling\remotes\Images\Anthem.map (The system cannot find the path specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at com.hifiremote.jp1.ImageMap.parse(ImageMap.java:19)
at com.hifiremote.jp1.Remote.load(Remote.java:223)
at com.hifiremote.jp1.Remote.supportsVariant(Remote.java:1507)
at com.hifiremote.jp1.ProtocolManager.findProtocolForRemote(ProtocolManager.java:229)
at com.hifiremote.jp1.ProtocolManager.getProtocolsForRemote(ProtocolManager.java:179)
at com.hifiremote.jp1.ProtocolManager.getProtocolsForRemote(ProtocolManager.java:171)
at com.hifiremote.jp1.KeyMapMaster.<init>(KeyMapMaster.java:93)
at com.hifiremote.jp1.RemoteMaster.createAndShowGUI(RemoteMaster.java:722)
at com.hifiremote.jp1.RemoteMaster.access$300(RemoteMaster.java:12)
at com.hifiremote.jp1.RemoteMaster$2.run(RemoteMaster.java:748)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

I change the remote to 'Slingbox with UEI RV chip' and get the following errors:

java.io.FileNotFoundException: F:\sling\remotes\Images\Generic.map (The system cannot find the path specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileReader.<init>(Unknown Source)
at com.hifiremote.jp1.ImageMap.parse(ImageMap.java:19)
at com.hifiremote.jp1.Remote.load(Remote.java:223)
at com.hifiremote.jp1.Remote.getDeviceTypeAliasNames(Remote.java:1102)
at com.hifiremote.jp1.DeviceEditorPanel.setRemote(DeviceEditorPanel.java:178)
at com.hifiremote.jp1.DeviceEditorPanel.actionPerformed(DeviceEditorPanel.java:249)
at javax.swing.JComboBox.fireActionEvent(Unknown Source)
at javax.swing.JComboBox.setSelectedItem(Unknown Source)
at javax.swing.JComboBox.setSelectedIndex(Unknown Source)
at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at javax.swing.plaf.basic.BasicComboPopup$1.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

I seem to get the same errors - no matter which remote I select from the drop-down list.

I then use File>open>Philips rmdu file. and am able to see the codes in the Functions Tab and a button list under
the Buttons Tab, but when I go to the Layout tab I just get a row of buttons without a picture of a remote.

Can anyone tell me if something is fundamentally wrong - or is it just my inexperience??

Thank you very much for your prompt and accurate reply - of course you were quite correct, I hadn't followed the instructions - but then, I'm an electrical engineer - what do you expect!!
_________________Please be patient with me, I've only just started!!